• RF Antenna adapter: use CB radio in Freightliner, Kenworth, Peterbilt semi-tractor with factory OEM wiring harness
• Convert Motorola male (car radio style) Plug on RG58 or RG59 coax from antenna to CB Radio 
• Motorola input socket has 3/8 inch diameter hole with 1/8 inch hole for center pin
• PL-259 output plug has 5/8-24 threaded retainer to connect to SO-239 socket on a CB radio
• adapt antenna with Motorola plug to police scanners or shortwave receivers with SO-239 antenna jack
• CBK Supply has hundreds of parts in stock:  Local pick-up: GPS 42.279521 -85.544180 
• We prefer giving pre-purchase advice but eBay blocks your contact info until you actually place an order!